/**
 * openHAB, the open Home Automation Bus.
 * Copyright (C) 2011, openHAB.org <admin@openhab.org>
 *
 * See the contributors.txt file in the distribution for a
 * full listing of individual contributors.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses>.
 *
 * Additional permission under GNU GPL version 3 section 7
 *
 * If you modify this Program, or any covered work, by linking or
 * combining it with Eclipse (or a modified version of that library),
 * containing parts covered by the terms of the Eclipse Public License
 * (EPL), the licensors of this Program grant you additional permission
 * to convey the resulting work.
 */

package org.openhab.model.sitemap.internal;

import org.openhab.model.core.ModelRepository;
import org.openhab.model.sitemap.Sitemap;
import org.openhab.model.sitemap.SitemapProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This class provides access to the sitemap model files.
 * 
 * @author Kai Kreuzer
 *
 */
public class SitemapProviderImpl implements SitemapProvider {

	private static final Logger logger = LoggerFactory.getLogger(SitemapProviderImpl.class);
	
	private ModelRepository modelRepo = null;
	
	public void setModelRepository(ModelRepository modelRepo) {
		this.modelRepo = modelRepo;
	}
	
	public void unsetModelRepository(ModelRepository modelRepo) {
		this.modelRepo = null;
	}
	
	/* (non-Javadoc)
	 * @see org.openhab.model.sitemap.internal.SitemapProvider#getSitemap(java.lang.String)
	 */
	public Sitemap getSitemap(String sitemapName) {
		if(modelRepo!=null) {
			Sitemap sitemap = (Sitemap) modelRepo.getModel(sitemapName + ".sitemap");
			if(sitemap!=null) {
				return sitemap;
			} else {
				logger.debug("Sitemap {} can not be found", sitemapName);
				return null;
			}
		} else {
			logger.debug("No model repository service is available");
			return null;
		}
	}

}
